Willmer, Pat . <br/><br/>
Invertebrate relationships : patterns in animal evolution /  
Pat Willmer. 
 - Cambridge :   Cambridge University Press ,   1990. 
 - xi,400p. :   ill.,figs. ;   23cm .  
<br/><br/>Includes references and index 
<br/><br/><label>ISBN: </label>0521337127  UKP 12.95 
<br/><br/><label>Subjects--Index Terms: </label>INVERTEBRATES 
<br/><br/><label>Dewey Class. No.: </label>592.038  / WIL/I